Ключевые слова: app, blood, blue, cardiac, cardiology, care, check, closeup, covid19, device, digital, disease, display, doctor, electronic, equipment, exam, finger, fingertip, glove, hand, health, heart, heartbeat, hemoglobin, hospital, instrument, latex, level, measure, measurement, medical, medicine, monitor, monitoring, oximeter, oxygen, oxygenation, oxymeter, person, pressure, pulse, rate, saturation, sensor, technology, test, tool, white,